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Card 877 of 9712026-09-29 issue

Observed arrival · 2026-09-29

Backloop turns agent dead ends into feedback

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Editorial interest 78/100 Selection signal · not a rating of the site

An open agent-feedback protocol and hosted platform for collecting reports about API gaps, grouping them into issues, and proposing human-approved code fixes.

Landing page captured for the 2026-09-29 issue.
For
API teams building for AI agents
Worth noticing
The protocol includes a discovery document, shared conformance cases, and a 202 response for reports about already-tracked issues.

Field notes

The specification describes agent discovery through /.well-known/agent-feedback, a link relation, and feedback headers on error responses. Its examples also cover a known_issue response and reports from calls that returned HTTP 200. The page links conformance cases plus TypeScript and Python SDKs; the report cluster and passing-test output are shown as a product walkthrough, not independently verified operation.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
⊠LoginAccess appeared gated
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use

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trybackloop.com

Landing page observed 2026-09-29. The live site may have changed.